Valve.



G. F. FERNALD.

VALVE. APPLICATION FILED MAY IO, 1907.

QQQAEQB Patented D8017, 1909.

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CHARLE$ l FEBNALD, OF BOSTQN. MASSACHUSETTS, ASSIGNGR TO STAR BRASSMANUFACTURING CDMPANY,

- MASSACHUSETTS.

OF BOSTON. MASSACHUSETTS, A C(flRPOIR-AYIIO'N OT" VALVE.

Specification of Letters Patent.

Patented Dec. 3', tlltltl.

Application filed May 10, 1907. Serial No. 372,848.

To all whom it may concern:

Be it known that 1, CHARLES 1*..FERNALD, of Boston, in the county ofSuffolk and State of ll/lassachusetts a citizen of the United States,have invented a new and use ful Improvement in Valves, of which thefollowing is a full, clear, and exact description, reference beinghad tothe accompany ing drawings, forming a part of this specification, inexplaining its nature.

My invention relates especially to an improved means for evenly seatingthe valves upon theirvalve seats.

My invention relates also to further improvements in detail ofconstruction all of which can best be seen and understood by referenceto the drawings, in which Figure 1 shows my valve in cross verticalsection. Fig. 2 shows the same on the line 2-2 of Fig. 1.; r

In the drawings :A represents the hollow body of the valve from whichthere projects laterally a neck A on which is threaded the bonnet AThrough the body of the valve there extends a' straightaway passage ofwhich a represents the inlet passage oi the valve and a the outletpassage thcreot'. Intermediate these passages is the valve chamber aCOlIlYllUlllCtlllOll between which and said respective inlet and outletpassages is by way of the ports a", a. 'lhese ports are formed by inwardcontractions a, a formed inthe body-of the valve and on the internalfaces of which contractions are formed the valve seats o, crespectively. These valve seats are constructed to occupy an inwardlyinclined position by which the valve chamber interposed between saidseats is Wedge-shaped in torin.

B, 13 represent the respective valves or disks which are ada ned lobecontained in the Valve chamber 3 and assume an operative seatingposition upon their respective valve seats (as shown in the drawingswhere they close the ports in the passage through i off their seats inthe following manner: .-\r ranged upon the respective idcs ol' the bodyof the valve and extending up into it neck A are what may be termedguides or ways a. These 'ays project inwardly from the shell of thevalve and in a direction crosswise the passage through the body ol thevalve. 'lheir disposition is su h. al o. that the valves or diskssliding upon thcsc guides or ways. when moved in one plane ot'direction, will become scaled upon. their respective valve seats andwill at all timc:-. or when moved into a disengaging nisition hold andmaintain an angular position corresponding with that ol? theirrespective seats with respect to said guides. The disks or valves arearranged to slide upon these guides by forming grooved projections (1 onthe backs of the respective disks or valves and in which grooves ol theprojections the guides are adapted to be contained. The oi 'tect is thatthe valves or disks are so maintained that. by moving the same in oneplane of direction they may be guided or brought to contact with theirrespective valve seats without drawing across the taco of said seats.Besides this and even more essential the valves or disks are maintainedin an operative position at all times whatever their position or theposition of the valve may be, which prevents them from becomingdisarranged so as bind. 111 other words, these disksor valves alwaysoccupy a normal position to move freely in either direction.

I will now refer to the mode of operating the valves. Upon the neck A isarranged as before described the bonnet A of the valve. v

'lhrough this bonnet and arranged to turn therein is a nolrrising stem(3, titted with a hand-wheel c by which the stem may he turned. 'lhcstemextends down into the intcrior of the valve and in the constructionshown even into the valve chamber o. The portion of the stem which iscontained with in the valve is made threaded and upon it is arranged toslide up and down as the valve is turned a sleeve 0. On the end of thissleeve is arranged a nut a made preferably elongated and contained insockets formed by the projections extending as before explained from thebacks of the respective Ila-l the valves or disks may be guided tobecome properly seated upon their valve seats, yet owing to'some slightirregularity in the positioning of the valve seats or relative positionof the guides, I prefer that the valves or disks may have a slightlyloose fit upon their respective guides, not so loose that it will in anyway detract from the purposes of ny'invention above described, but justso loose that the disks or valves may have a chance to accommodatethemselves to any slight variation or irregularity in the positions oftheir respective seats inorder that such positioning of the valves ordisks may be easily obtained withrelation to the nut 0 I have so formedthe nut that the disks or valves may readily vary or'adjust theirpositions thereon to accommodate themselves to their seats. Suchconstruction of the nut consists in making the opposite sides of thenut, facing the respective disks and sockets formed therein,cylindrically convegedto fit loosely within said respective socketsandso forming the nut also that the lines of curvature presented by theopposite sides thereof will 'lie in planes positioned at substantiallyright angles to' each other, the sockets of course being correspondinglyconeaved to receive the, convexed sides of the nut. The .convexed sidesof the nut being thus disposed from axes on which the respective diskswill turn easily with sufficient. movement to accommodate themselves totheir respective seats but with no'sueh excess of movement as would tendto their displace ment or wear, the aforedescribed convexed.

formation of thenu't tending also to hold the disks or valves verysecurely on their respective seats.

Reference has already been made to the factfthat the valve stem C turnswithin the bonnet A surmountiug the neck of the valve. In thisconnection it is to be noted that the-valve stem is provided withacollar 0 which is contained within a depression formed in the bonnet ofthe valve into which is threaded a screw (1", the collar upon the valvestem being interposed in a socket formed between the end of this screwand the adjacent' side of the bonnet. The collar is provided withbeveled faces 0, 0 which are adapted to bear against seatscorrespondingly beveled, formed in the end of said screw and thebottomof the depression i and off their respective seats,

formed in the bonnet. The screw a is pro- *vided with an annularshoulder a resting I upon the top of the bonnet and attached to this isa stutfing-box 04 in which is-con tained a gland a encircling the valvestem and held-in place by a packing-nut (1 By ,mcans of the collar 0 onthe valve stem it is held from sliding in a longitudinal direction butpermitted to turn. The especial point to be'noted in this constructionis the beveling of the sides of the collar which permits them to fitevenly upon their adjacent seats by reason of the fact that a beveledside of the collar will adjust itself toirregularities-in the seat andaccordingly make a ti ht fit. Now this is of material importance or thefollowing reason: \Vhen the valve is closed by operating the stem toforce the valvular disks down upon the valve seats, as soon as .thesedisks are fairly seated,-upon a slight further turning of the stem thebeveled face 0 will be forced up against its seat formed on the end ofthe screw a. .fits tight against its valve seat the valve will not leakwhen closed. When the .valve'stem is turned in a reverse direction foropening the valve the sleeve 0 on the valve stem will rise on said stemuntil the end of the sleeve contacts with the inside of the bonnet atthe point a. Upon a slight further turning of the valve stem the sleevewill be made to hug tight against the side of the bonnet. This acts'todraw the beveled face 0 of ,the collar on the stem hard against its seatand prevents the valve from leaking when open. In case there is a slightleakage this is provided for by the gland'orpacking further up on thevalve stem. Moreover, by obtaining a tight joint at the point of thecollar I am enabled to remove the packing-nut and re pack the valveWitliabsolute safety Whether the valve is open or shut.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States i 1. A valve having inclinedseats, disks adapted to become seated thereon which disks are providedwith sockets formed in the backsthereof, a valve stem by which saiddisks are controlled, and a nut threaded on said stem the opposite sidesof which nut facing the respective disks and sockets formed therein arecylindr'ically convexed to fit loosely within said respective socketsand which nut is so formed also that the lines of curvature presented bythe opposite con vexed sides thereof will lie in planes positioned atsubstantially right angles to each other. v

2. Avalve having inclined seats, disks adapted to become seated thereon,said disks having sockets formed in the backs thereof, means for guidingsaid disks to move onto a valve stem Now if this face which said disksare (ronlrollml, and u l nut thre; lLIl upon said-stem the oppositesides of which nut-facing lhc rvspovlivc disks and .sockcts formedtherein are ylindrically cdnvexml to fit 100501 \vilhm said 1c ;pucti\esockets v aml hivh nut is so forlnvll also that lhv 111105 of umwmliumpre- 1 xent'ecl by the opposite womcxecl sides thereof will lie in plumsposillonocl :al Hlllr right zmg'lvs [0 each other,

CHARLES hhl lflll llALD. Witnesses:

JOHN E. ll. Hum M. E. l lhu llcu'n'.

